ios - 选择tabBarController的索引并传递数据

Question

我想在将数据传递给它的tabbarcontroller的索引0处选择UIViewController。看来我正在改为访问UINavigationController。有人知道为什么会这样吗？

SearchViewController *search = (SearchViewController *)[self.tabBarController.viewControllers objectAtIndex:0];
[search initWithText:@"This is a test"];

[[self.tabBarController.viewControllers objectAtIndex:1] pushViewController:search animated:NO];

//同时使用以下命令接收错误:

self.tabBarController.selectedViewController = search;

错误:

-[UINavigationController initWithText:]: unrecognized selector sent to instance 

Answer 1

哇，现在我很傻。这工作了。

UINavigationController *navController = [self.tabBarController.viewControllers objectAtIndex:0];
SearchViewController *search = [navController.viewControllers objectAtIndex:0];
[search initWithText:@"This is a test"];
self.tabBarController.selectedViewController = navController;